Brushing, grinding, or polishing machine.



No. 677.589. f I Patented my 2, 190|. s. mcHnLs.

BRUSHING, GRINDING, 0R PULISHING IAGHINE.

(Applitiion led In'. 5, 1901.)

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No. 677,589. Patented July 2, |901. B. NICHOLS.

BRUSHING, GBINDING, 0R PULISHING MACHINE.

(Application tiled Har. 5, 1901.-) (No Model.) 3 Sheets-Sheef 2.

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No. 677,589. Patented lulyl '2, 19m.

B. NICHOLS.

BBUSHING, GRINDING, 0R FULISHING MACHINE.

(Application led Mar. 5, 1901.)

(N0 Model.) 3 Sheets-Sheet 3.

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BENJAMIN NICHOLS, OF JAMESTOVN, NEVST YORK.

:Bencini-carton forming pere ef Lettere Patent ne. 677,589, dated muy 2,1901. Application led March 5, 1901. Serial No. l19,905. (No model.)

To @ZZ 'whom t 71u07/ concer-n:

Be it known that I, BENJAMIN NICHOLS, a citizen ofthe UnitedStates,residing at .Iam estown, in the county of Chautauqua and State ofNew York, have invented a new and useful Brushing, Grinding, or PolishinMachine, of which the following is a specilication.

My invention relates particularly to machines used forgrinding,polishing,aud brushing various implements of hardware, such asaxes or the like.

My object is to provide a machine of this character of improved generalconstruction, particular attention being paid to simplicity ofconstruction and ease of manipulation.

In the preferred construction I mount the grinding or polishing disksadjacent to each other in swinging frames and connect the work-holderwith a spring-supported Vertically-movable slide, the work-holder beingmanually depressible. I employno mechanism for separating the disks, asthis can be accomplished through the medium of the article beingoperated upon.

My invention is shown in its preferred lform in the accompanyingdrawings, in which- Figure l is a view in front elevation of themachine; Fig. 2, a view in side elevation, the direction of view beingindicated at line 2 of Fig. l; Fig. 3, a horizontal section taken asindicated at line 3 of Fig. 2; Fig. 4t, a perspective' view of thework-holder and accessory parts, the parts being disconnected; Fig. 5,an enlarged broken vertical section taken as indicated at line 5 of Fig.l and illustrating the manner in which the swinging frames are mounted;and Fig. 6 a broken view, in side elevation, showing the lower portionsof the two swinging frames employed and the manner in which the same areconnected.

For clearness of illustration the workeholder is represented in fulllines in its depressed position, its elevated position being indicatedin dotted lines in Fig. l.

Arepresents the frame of the machine, comprising mainly side frames AA2, each having horizontal connecting members A3 A4 A5; B O, swingingframes pivotally connected with the upper portion of the main frame A;B' C', grinding or polishing disks fixed to shafts B2 O2, journaled inthe lower ends of the frames B and C, respectively; B3 O3, pulleys onthe shafts B2 O2, respectively; D, a vertical guide connected with theside frame A and having dovetail connection with a vertically-movableslide D; D2, a work-holder having pivotal connection at a with an offsetct at the base of the slide D; D2, a foot-lever having piu-and-slotconnection at b with the main frame and pivot-ally joined at b to a`slotted depending lug h2, with which the offset ct is provided; E, aspring supported from the upper portion of the main frame and connectedthrough a rod c with a boss c on the slide D'; F G, shafts journaled iuthe upper portion of the frame A and having secured thereon pulleys F F2and G G2, respectively; F3 G3, belts connecting the pulleys F G',respectively, with the pulleys B3 C2; H, a shaft journaled in the upperportion of the main frame and equipped with a pulley H and a bevel-gearH2; H3, a vertically-disposed shaft journaled in the main frame andequipped with a gear H4, meshing with the bevel-'gear H2 and providedalso with a spur-gear H5; I, a vertically-disposed shaft journaled inthe main frame and provided with a spur-gear I',

meshing with the gear H5 and equipped at its j lower end, Fig. 3, withstirrer-blades I2; I3, a receptacle into which the stirrer-blades dip,said receptacle serving to receive a semiliquid material used in thegrinding or polishing process, and J the main driving-belt for themachine, said belt passing about the pulleys H, F2, and G2.

Each swinging frame B O comprises, preferably, side members d d,connected by cross members d2 613-.

As shown in Fig. l, the journal-boxes at the top of the main frame,which receive the shafts F and G, each comprise two partsff, the formersecured to the frame by bolts f2 and the latter by bolts f2. Eachjournal-box is provided with an inwardly-projecting (divided) sleeve orhollow boss f4, Fig. 5, `upon which is journaled the upper end of theadjacent side member of the corresponding swinging frame. The swingingframes are connected at their lower portions, Fig. 6, by a spring g,secured to an adjustable stud g.

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Adjacent thereto is provided a stud g2, ad'

justably connected at one end with one of rpg the swinging frames andhaving its opposite end in position to serve as a stop for engaging thecompanion swinging frame. The stud g2 is adjusted to prevent the disksfrom coming in contact with each other under the action of the spring g.The journal-boxes at the lower ends of the frames B and C for receivingthe shafts B2 C2 are preferably divided, as shown. As shown in Fig. 3,suitable collars are provided for receiving any longitudinal thrust fromthe shafts B2 C2.

The work-holder D2 in the form shown comprises vertical members h 7i,connected at their lower ends with a web h2 and provided at their upperends with recesses h3. The slide D is provided near its Lipper end witha curved gage 7;-, whose radius of curvature extends from a projectionof the axis at a, upon which the work-holder is pivoted. It will readilybe seen that the work-holder may be swung in a horizontal plane, asdesired. It may also be depressed to any required degree, and theresilience of the spring E should be sufficient to return it to itselevated position when the foot-pressure is removed.

The operation of the machine is exceedingly simple. The work is restedon the work-holder and held in proper position thereon by the operator.Motion is imparted to the grinding-disks through the medium of the beltsJ and F3 G3. The operator, through the medium of the foot-lever,depresses the workholder, at the same time forcing the article to beground downward between the grinding-disks. As the article passesbetween said disks it forces the latter apart. When the foot-pressure isrelieved, the work-holder is raised by the spring E. It is obvious thatthe amount of grinding to which any portion of the article is subjectedwill depend upon the length of time that portion remains between thedisks. This is within the control of the operator. It will also bereadily seen that the desired cross-section or 'contour can be given tothe article by swinging the holder in a horizontal plane. This may beaccomplished through the medium of a handle, upon which the ax or otherarticle is secured, or by any other suitable means. The receptacle I3,containing the grinding or polishing iuid, is in close proximity to thedisks, and the material therein is kept constantly stirred by the bladesl2.

It will readily be perceived that my construction involves acomparatively small number of parts and may be cheaply manufactured andeasily operated. l

The work-holder may be stated to be resiliently held, from which it isto be understood that the resilience of the spring under stress (or someequivalent force) is the retractive force serving to return the holderto its normal position at rest.

Changes in details of construction within the spirit of my invention maybe made.

Hence no limitation is to be understood from the foregoing detaileddescription, except as shall appear from the appended claims.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a machine of the character described, the combination'with a mainframe of swinging frames secured thereto, grinding or polishing disksjournaled in the said swinging frames, means for yieldingly holding saidswingingframes together in a given position to oppose separation of thedisks, and means for imparting rotary motion to said disks,substantially as described.

2. The combination with a main frame, of swinging frames pivotallyconnected therewith toward their upper ends, shafts journaled toward thelower ends of said swinging frames and equipped with grinding orpolishing disks, means for yieldingly holding said swinging frames witha given degree of separation and yieldingly opposing further separation,and means for imparting rotary motion to the disks, substantially asdescribed.

3. The combination with a main frame of swinging frames connectedtherewith, grinding or polishing disks operatively connected with thelower portion of said swinging frames, a spring connecting the lowerends of said swinging frames and a stop limiting the relative approachof the lower ends of said swinging frames, substantially as described.

4. The combination with a main frame of shafts journaled in the upperportion thereof, swinging frames pivotally supported concentric withsaid shafts, parallel shafts journaled in the lower ends of saidswinging frames and equipped with grinding or polishing disks, and beltconnection between the parallel shafts at each swinging frame,substantially as described.

5. The combination with a main frame, of shafts journaled in the upperportion thereof, swinging frames pivotally supported concentric withsaid shafts, parallel shafts journaled in the lower ends of saidswinging frames and equipped with grinding or polishing disks, beltconnection between the parallel shafts at each swinging frame, and abelt communicating motion to both said upper shafts, substantially asdescribed.

6. The combination with a main frame, of parallel shafts at the upperportion thereof, journal-boxes fixed to the main frame and receivingsaid shafts and provided with projecting sleeves, swinging framespivotally connected with said sleeves, parallel shafts journaled towardthe lower ends of said swinging frames and equipped with grinding orpolishing disks, belt-and-pulley connection between each set of shaftsat each swinging frame, and means for communicating motion to the uppershafts, substantially as described.

7. The combination with the main frame of IOO IIO

yieldingly-supported disks, and a resilientlyheld Work-holder coactingwith said disks,substantially as described.

8. The combination with a main frame, of yieldingly-supported rotarydisks, a springheld workholder coacting with said disks,and means formanually moving the work-holder relatively to the disks, substantiallyas described.

9. The combination with a main frame, of yieldingly-held swingingframes, shafts journaled toward the lower ends of said swinging framesand equipped with disks, a guide connected with the main frame, ayieldingly-held slide connected with said guide, aWork-holder connectedwith said slide, and means formanually moving said work-holder in onedirection, substantially as described.

l0. The combination with a main frame,and operatively-1nounted polishingor grinding disks and a work-holder movable toward and away from thedisks, said work-holder being swiveled to swing in a plane parallel tothe axes of the disks, substantially as described.

ll. The combination with a main frame, of operatively-mounted polishingor grinding d isks,a Work-holder movable toward and away from the disks,said Work-holder being swiveled to swing in a plane parallel to the axesof the disks, and a curved gage having its radii of curvatureintersecting the axis upon which said holder is swiveled, substantiallyas described.

12. The combination with a main frame, of operatively-mounted polishingor grinding disks having horizontal axes, a Work-holder movable towardand away from the disks, a vertical axis upon which the said Work-holderis pivoted, and a vertically-disposedconcave gage having radii ofcurvature intersecting a prolongation of said axis, substantially asdescribed.

13. The combination with a main frame, yieldingly-connected swingingframes supported thereon, grinding or polishing disks operativelymounted toward the lower ends of said swinging frames, means forcommunicating motion to said disks, a polishing-Huid receptacle locatedadjacent to the disks, a vertically-disposed stirrer-shaft equipped atits lower end with a stirrer located within said receptacle andconnecting means between said stirrer-sliaft, and means for oper atingsaid disks, substantially as and for the purpose set forth.

14. The combination with a main frame and yieldingly-held rotary disks,of a yieldingly held movable slide connected with the main frame, afoot-lever connected with said slide, and a work-holder connected withsaid slide, substantially as describedl BENJAMIN NICHOLS.

In presence of- OHARLEs M. NICHOLS, JAMES S. CONNER.

